Improvement in dies for forming sewing-machine shuttles



D. W. HALE.

Dies for Forming Sewing-Machine Shuttles.

N0. 134,541. Patented Jan. 7, 1873.

UNITED STATES DANIEL W. HALE, OF MIDDLETOWN, CONNECTICUT.

IMPROVEMENT IN DIES FOR FORMING SEWING-MACHINE SHUTTLES.

Specification forming part of Letters Patent No. 1341,5 11, datedJanuary 7, 1873.

To all whom it may concern:

Be it known that I, DANIEL W. HALE, of Middletown, in the county ofMiddlesex and State of Connecticut, have invented a new Improvement inDies for Forging Shuttles for Sewing-Machines; and I do. hereby declarethe following, when taken in connection with the accompanying drawingand the letters of reference marked thereon, to be a full, clear, andexact description of the same,

and which said drawing constitutes part of this specification, andrepresents, in-

Figure 1, a perspective view of the upper portion, and Fig. 2 aperspective view of the lower portion, of the first three dies in theseries; Fig. 3, a perspective view of the upper, and Fig. 4 aperspective view. of the lower, portion of the fourth or last die of theseries; and in Figs. 5, 6, 7, and 8 illustrating, respectively, theoperation of the four successive dies.

This invention relates to the construction of dies for forgingsewingmachine shuttles; the object being to facilitate the operation;and it consists in a series of dies for this purpose, as more fullyhereinafter described.

In both the lower portion B and upper portion A of the die a cavity, a,substantially alike in each, is formed to produce the first operation.These dies are used in drops, presses, or hammers in the usual manner.The rod or blank of metal heated is placed in the die a,

and the two struck together will forge the blank into the shape denotedin Fig. 5. From this it is placed in the second die or cavity b. Aprojection, b, in the upper die, corresponding, bends the blank into theform seen in Fig. 6; then placed in the third die of cavity 0 in thelower die. A projection, c, on the upper part strikes upon the blank,and further shapes it toward completion, as seen in Fig. 7. i

I am enabled to produce these three opera tions by a single heat; and Ifind it advisable before the last or completing operation to reheat themetal. This done, and placed in the cavity a in the fourth lower die D,this cavity corresponding to the exterior of the shuttle to be produced,and on the upper portion E a projection, d, is formed corresponding tothe interior of the shuttle to be produced, and this struck upon theblank in the lower die, completes the shaping of the shuttle, throwingthe surplus metal out in the form of a fin, as seen in Fig. 8. This finis trimmed or cut off, and the shuttle is ready for the operation offinishing, the forging or shaping being complete.

I claim as my invention- A series of dies, substantially as shown andherein described, for forging shuttles.

DANIEL W. HALE. Witnesses:

E. H. PARSHLEY, CHAS. F. RIsEnoRF.

